161596120 has 96 divisors (see below), whose sum is σ = 437691600. Its totient is φ = 53475072.

The previous prime is 161596111. The next prime is 161596133. The reversal of 161596120 is 21695161.

It is a super-2 number, since 2×161596120² = 52226611998108800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55419 + ... + 58261.

Almost surely, 2^161596120 is an apocalyptic number.

161596120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161596120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218845800).

161596120 is an abundant number, since it is smaller than the sum of its proper divisors (276095480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161596120 is a wasteful number, since it uses less digits than its factorization.

161596120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2897 (or 2886 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 161596120 is about 12712.0462554225. The cubic root of 161596120 is about 544.6827769841.

The spelling of 161596120 in words is "one hundred sixty-one million, five hundred ninety-six thousand, one hundred twenty".